NPPES file of Aug 9, 2026

James Stubblefield, MD

Emergency Medicine Physician · Salinas, CA

James Stubblefield, MD is an emergency medicine physician with a practice address in Salinas, California, and NPI 1598768053, issued on May 27, 2005. Check the license (California A47950, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1598768053
Name
James Stubblefield
Credential
MD
Primary taxonomy
Emergency Medicine Physician 207P00000X
License number
A47950 CA
Self-reported in NPPES; status is on the state search
Practice location
1212 S Main St, Salinas, CA 93901
Phone
(831) 422-7777
Enumerated
May 27, 2005
Record last updated
Mar 24, 2021 (not updated in 5 years: call before relying on the address or phone)
Medicaid ID
1598768053 CA
Medicare enrollment
Enrolled (PECOS I20070213000394); accepts Medicare assignment
Medical or professional school
Hahnemann University College Of Medicine, 1982
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
Download card Updates feed

Also registered at 1212 S Main St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Alexandra Arnold, MDFamily Medicine Physician1093464455
  2. Allen Bueno Del Bosque, MDFamily Medicine Physician1144648593
  3. Anthony Caporaso, PAPhysician Assistant1962457184
  4. Leonard Caputo, M.D.Surgery Physician1164568614
  5. Gregory CeusFamily Medicine Physician1053817759
  6. Umberto D'Ambrosio, M.D.Family Medicine Physician1942203740

Verify James Stubblefield in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A47950
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

Is this page about you? You can ask us to correct, restrict or remove it: how.

51% fewer Medicare Part D claims than the average emergency medicine physician in 2024

111 Medicare Part D claims for 53 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D.

  1. James Stubblefield111
  2. Specialty average226

Most prescribed

  1. Sulfamethoxazole-Trimethoprim11 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

The practice group's MIPS final score for 2023 (Medicare payment program): 84.6 of 100

The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score74.4
  2. Costout of 100 · 30%74.1
  3. Promoting interoperabilityout of 100 · 25%81.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Bills Medicare through one group practice

  1. Doctors ON Duty Medical Group, IncSalinas, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

James Stubblefield among 7,751 emergency medicine physician records in California

James Stubblefield, MD is one of 7,751 emergency medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 96% newer
  • In a Medicare fileYes · 81% of these records are
  • In the CMS Doctors and Clinicians fileYes · 59% of these records are
  • Graduated1982 · median 2011 among the 4,560 with a school on file
  • Record last updated2021 · 59% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Emergency Medicine Physician providers in California

There are 7,751 emergency medicine physician records in California.

The 8 emergency medicine physician records with the nearest ZIP codes

  1. Nanette Blair, MDSalinas, CA 939011710980289
  2. Eric Fajardo, MDSalinas, CA 939011265435739
  3. Ronald Gertsch, M.D.Salinas, CA 939011043356033
  4. Nikolas Greenson, M.D.Salinas, CA 939011811997737
  5. Erica Locke, M.DSalinas, CA 939011043530694
  6. Paul Marchand, M.D.Salinas, CA 939011952344186
  7. Theresa Marsh, MDSalinas, CA 939011437459138
  8. Robert Morris, M.D.Salinas, CA 939011841510468

Common questions

What is James Stubblefield, MD's NPI number?

James Stubblefield, MD's National Provider Identifier (NPI) is 1598768053, issued on May 27, 2005. An NPI identifies a provider in billing; it is not a license.

Where is James Stubblefield, MD located?

The NPPES record lists a practice address at 1212 S Main St, Salinas, CA, 93901. Phone: (831) 422-7777. Providers update this record themselves, so call before visiting.

How can I verify James Stubblefield, MD's license?

NPPES lists California license number A47950, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does James Stubblefield, MD prescribe under Medicare Part D?

In 2024, James Stubblefield, MD had 111 Medicare Part D claims for 53 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.

What is James Stubblefield, MD's MIPS final score?

The 2023 MIPS final score is 84.6 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.